8NIVESRANGSAN P,STEEL J A,REUBEN R L. AE mapping of engines for spatially located time series [ J ]. Mechanical Systems and Signal Processing, 2005,19 (5) : 1034 - 1054.
9JEONG H. Analysis of plate wave propagation in anisotropic lami- nates using a wavelet transform [ J ]. NDT&E International, 2001, 34(3) :185 - 190.
10WANG X H, ZHU C M, MAO H L, et al. Wavelet packet analy- sis for the propagation of acoustic emission signals across turbine runners [ J ]. NDT&E International, 2009, 42 ( 1 ) :42 - 46.